Invalid regular expression: /*/: Nothing to repeat on self-hosted GithubRunner

[CER-ChrisA]

Hello,

We had a working github action that uses Azure/get-keyvault-secrets@v1 (runs-on: ubuntu-latest). We moved the action to a self hosted github runner (runs-on: self-hosted) and the Azure/get-keyvault-secrets@v1 step fails with an error message:

Error: Invalid regular expression: /*/: Nothing to repeat

The Azure/login@v1 is successful

I wonder if its this line?
main.ts:33
environment = environment.replace(/"|\s/g, '');

because the line below it doesn't trigger.
console.log('Running keyvault action against ' + environment);

When running this command in the az console
az cloud show --query name

i get "AzureCloud" as a return

[CER-ChrisA]

My googlefu has failed me, hence this GitHub issue :)

potentially the windows platform handles regular expressions differently than ubuntu?